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The use of herbicides determine productivity growth, but the herbicides are produced by synthesis, out of ecosystem. Misused of herbicides, after a thorough knowledge, they can become dangerous for the environment through the introduction of toxic residues in agricultural ecosystems. Is necessary to reduce utilized doses, to use of conservative technologies, but also is necessary some alternative solutions to build, effective weed control in new conditions. Changing the soil work system and using the soil minimum tillage system, like a conservative option, change the weed spectrum in soybean culture. Soybean is more sensitive to imbue culture with weed; especially in the first 25 days of the vegetation period, when the plants are grows, and the soybean plants remain undeveloped. Further fill with weeds of the culture diminishes production and the quality of the seeds. The researches at ARDS Turda in the agricultural year 2012-2013 aimed to the effect of 12 types of herbicides in soybean crop grown in two systems of soil work: classical system and minimum tillage system. Experience are made on a clayey - loam soil, bi-factorial experience type being, with variants specific soybean culture, with combination of herbicides and with different moments of application. Soybean yield is not influenced significantly of soil system of work, but productions are influenced distinctly significant or very significant of treatment variant of weed control. In the minimum tillage system fill with weeds of soybean culture are higher in comparison with classical system of soil work. This is due to the work the soil in the autumn, when it is fall plowed, and the lack of rain in spring. The system work of soil, are influence upon the spectrum of weeds and the combination of herbicides used, for an sensitive culture like soybean, may be established on complementarity by scientific considerations.

WEED CONTROL IN SOYBEAN CULTIVATED IN MINIMUM TILLAGE SYSTEM AND THE PRODUCTION OBTAINED AT ARDS TURDA